linearized_incompressible.h

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// ------------------------------------------------------
//
// SPDX-License-Identifier: GPL-2.0-or-later
//
// SPDX-FileCopyrightText: Copyright (C) 2011-2026 by the ASPECT authors.
//
// This file is part of ASPECT.
//
// Detailed license information governing the source code and
// contributions can be found in the folder LICENSES and in
// LICENSE and CONTRIBUTING.md at the top level directory.
//
// ------------------------------------------------------

#ifndef _aspect_material_model_equation_of_state_linearized_incompressible_h
#define _aspect_material_model_equation_of_state_linearized_incompressible_h

#include <aspect/material_model/interface.h>
#include <aspect/simulator_access.h>
#include <aspect/material_model/equation_of_state/interface.h>


namespace aspect
{
  namespace MaterialModel
  {
    namespace EquationOfState
    {
      template <int dim>
      class LinearizedIncompressible
      {
        public:
          void evaluate(const MaterialModel::MaterialModelInputs<dim> &in,
                        const unsigned int q,
                        MaterialModel::EquationOfStateOutputs<dim> &eos_outputs) const;

          bool is_compressible () const;

          static
          void
          declare_parameters (ParameterHandler &prm,
                              const unsigned int n_compositions = 0);

          void
          parse_parameters (ParameterHandler &prm,
                            const unsigned int n_compositions = 0);


        private:
          double reference_rho;

          double reference_T;

          double thermal_alpha;

          double reference_specific_heat;

          unsigned int maximum_number_of_compositions;

          std::vector<double> compositional_delta_rhos;
      };
    }
  }
}

#endif